How to address C++/CLI managed/unmanaged from C#?

[RostKudr]

My attemption with MS Visual Studio 2008 SP1.
Compilng/linking is OK. But the run of Main.exe results in FileNotFoundExc eption (HRESULT: 0x8007007E) in TestUnmanaged.M ain.

// cl /clr /LN Sub.cpp
using namespace System;
#pragma unmanaged
void Dummy () {;}
#pragma managed
namespace MySubSpace {
  ref class Sub1 {
    public:
      void SaySub1 (String ^name) {
        Console::WriteLine ("Sub1 says : {0}", name);
        Dummy ();
    }
  };
}
// csc Main.cs /addmodule:Sub.netmodule /platform:x86
using System;
using MySubSpace;
public class TestUnmanaged {
  public static void Main () {
    Sub1 s1 = new Sub1();
    s1.SaySub1 ("from Main");
  }
}

Main.exe runs successfully if four lines in Sub.cpp with "pragma" and "Dummy" are commented out and "cl /clr:safe /LN Sub.cpp" is applied.

[Christian Binder]

I dn't know much about it, but I know, there's an unsafe keyword in c#, maybe you have a look at it

msdn 1
msdn 2

[RostKudr]

Thanks, Christian. But not any of the manipulations with "unsafe" in Main.csc prevents the exception.
I've tried:
1. public unsafe static void Main ()
2. csc Main.cs /addmodule:Sub.n etmodule /platform:x86 /unsafe+
3. 1st and 2nd together.

The exception throws even if there is only one line in the method Main: Sub1 s1;

[RostKudr]

The problem is soldved in MS Visual Studio 2010 with applying csc compiler's key /unsafe